Cross-head.



K. STEINBECKER.

CROSS HEAD.

APPLICATION FILED AUG-7.1912.

., Patented Oct. 26, 1915.

I r-uventor; Karl Steinbecfier;

itnesses:

til

KARL STEINBEGKER, OF OHARLOTTENBURG, GERMANY, ASSIG-NOR TO GENERAL ELECTRIC COMPANY, A CORPORATION OF NEW YORK.

CROSS-HEAD.

Specification of Letters Patent.

Patented Oct. 26, 1915.

To all whom it may concern:

Be it known that I, KARL STEINBEGKER, a subject of the King of Prussia, residing at C-harlottenburg, Germany, have invented certain new and useful Improvements in Cross-Heads, of which the following is a specification.

This invention relates to internal combustion engines, and its object is to provide an improved cross-head for such engines, whereby a saving in material and weight can be efiected and also a greater rigidity secured.

The invention is illustrated in the accompanying drawing, which shows in longitudinal section an engine in which two oppositely moving pistons are arranged in the same cylinder, the upper piston being equipped with my improved cross-head.

In the cylinder 1 are two pistons 52, 3 which move in opposite directions and con trol respectively the inlet ports 4 and the outlet ports 5. The lower piston 2 is connected by a pitman 6 with its crank 7 on the common shaft 8. The upper piston 3 is connected with its cranks 9 by the long connecting rods 10, whose upper ends are pivotally attached to the ends of a crosshead fastened to said upper piston.

In the drawing this upper piston is shown in section, and is of the trunk type, having a strong head 11 and relatively thin side walls 12 which carry the packing rings 13. The cross-head 14- has a foot 15 which is secured to the head of the piston 3 by bolts 16. From the foot rises a rigid structure, preferably composed of diverging arms 17 cast integral with the foot 15 and united by a bridge 18 at their upper ends. At the ends of this bridge and adjacent to the upper ends of said arms are the bearings 19 which slide in the guide slots 20 formed on the upper end of the cylinder 1. Projecting beyond these bearings are the trunnions 21 on which the connecting rods 10 are pivoted.

By this construction of the cro-ss-head,

the thrust of the piston is transmitted from its axis to the ends of the cross-head near the bearings, thereby giving the structure greater rigidity and shortening the effective length of the two arms of the cross-head. In consequence of the more favorable dis tribution of the forces, the cross-head may be more lightly constructed, thereby effecting a saving in material and reducing the masses to be accelerated.

In accordance with the provisions of the patent statutes, I have described the principle of operation of my invention, together with the apparatus which I now consider to represent the best embodiment thereof; but I desire to have it understood that the apparatus shown is only illustrative, and that the invention can be carried out by other means.

What I claim as new and desire to secure by Letters Patent of the United States, is

A cross-head for a piston comprising a foot secured to the head of the piston, diverging arms extending therefrom, a bridge piece connecting them, bearings formed on said bridge piece adjacent said arms, and trunnions projecting beyond the bearings.

In witness whereof, I have hereunto set my hand this eighteenth day of July, 1912.

KARL STEINBECKER.

Witnesses HENRY HAsPER, WOLDEMAR HAUPT.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, I). G. 

